Dcf Reception - TFA 60.1511 Mode D'emploi

TFA_No. 60.1511_Anleitung_11_16
COMBO - Radio-controlled alarm clock
B5: Alarm switch ON/OFF with color mark
B6: RESET button
C: Housing:
C 1: Battery compartment
6. Getting started
• Open the battery compartment and insert three new batteries 1,5 V AA, polarity
as illustrated. Close the battery compartment again.
• The device is ready for use.
• The device will alert you with a beep.
• The alarm time (default 6:00) and the alarm time symbol appear in the display.
• The hands move to 12.00 o'clock.
• The clock will now scan the DCF frequency signal. The DCF symbol is flashing
on the display.
• When the time code is received successfully after 3-12 minutes, the digital time
appears briefly on the display and the analogue clock updates to the radio-con-
trolled time. The DCF symbol appears steadily on the display.

6.1 DCF reception

• The DCF reception always takes place at 1:00, 3:00 and 5:00 o'clock in the
morning. If the reception is not successfully received until 5:00 o'clock, the
next receive operation is again at 1:00 o'clock in the morning.
• You can start the initialization manually.
• Press and hold + button for three seconds.
• The DCF symbol will be flashing.
• To deactivate the DCF reception, press and hold again the + button for three
seconds.
• The DCF symbol disappears.
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COMBO - Radio-controlled alarm clock
• There are three different reception symbols:
flashing - reception is active
stays - reception is very good
no symbol - reception is deactivated
• If the clock cannot detect the DCF-signal (for example due to disturbances,
transmitting distance, etc.), the time can be set manually. The DCF symbol
disappears and the clock will then work as a normal quartz clock. (see: Manu-
al settings).
Note for radio-controlled time DCF
The time base for the radio-controlled time is a caesium atomic clock operated by
the Physikalisch Technische Bundesanstalt Braunschweig. It has a time deviation
of less than one second in one million years. The time is coded and transmitted
from Mainflingen near Frankfurt via frequency signal DCF-77 (77.5 kHz) and has
a transmitting range of approximately 1,500 km. Your radio-controlled clock
receives this signal and converts it to show the precise time. Changeover from
summer time or winter time is automatic. In Daylight Saving Time
the display. The quality of the reception depends mainly on the geographic loca-
tion. Normally there should be no reception problems within a 1,500 km radius
around Frankfurt.
Please take note of the following:
• The recommended distance to any interfering sources like computer monitors
or TV sets is at least 1.5 - 2 meters.
• Inside ferro-concrete rooms (basements, superstructures), the received signal
is naturally weakened. In extreme cases, please place the unit close to a win-
dow to improve the reception.
• During night-time, the atmospheric interference is usually less severe and
reception is possible in most cases. A single daily reception is adequate to
keep the accuracy deviation under 1 second.
is shown on
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